
Winter: Starts from November and lasts until the end of February. While the temperature will be at the lowest, you can barely feel the coldness and might only need a light sweater: Unless you are going to be up in the mountain ranges of Northern Thailand where the temperature can fall as low as 5°C, then you probably need a thick jacket and a scarf. Winter is the most popular time to visit the country. You will find it quite difficult to get a flight and accommodation or they can be very expensive especially during festive time like Christmas and New Year's.